#1 und #3 looks good for small watermark signs, because they are better to see if it small or/and have 50 % transparency.
Thanks Dave! Websites are a roll of the dice, but I've hedged my bets pretty well. I didn't make the decision alone. I was encouraged by principles in both the yachting and aviation industries. It will certainly take time (years!) to propagate JF, but when it takes off, it'll be worth the effort.
Hi Carl. As they stand, I would go for three - but would prefer five, if the blue sweep was lighter, say in white 'contrails'. I think the block of colour is too heavy. Hope that helps. David.